ASDA-B2  Chapter 3 Wiring 
Revision May, 2018     3-21 
Users have to select the operation mode based on the needs first (please refer to Chapter 
6.1 for the introduction of each mode) and refer to the following DI/DO table to know the 
corresponding default setting of DI/DO signal and Pin No of the selected mode in order to 
conduct the wiring. 
The table below lists the default setting of DI/DO signal function and pin No: 
The explanation of DO signal default setting is as the followings. 
DO 
Signal 
Operation 
Mode 
Pin No. 
Details 
Wiring Method 
(Refer to 3.3.3) 
+  - 
SRDY ALL 7 6 
When the servo drive applies to the 
power and no alarm (ALRM) occurs in 
control circuit and motor power circuit, 
this DO is ON. 
C5 / C6 / C7 / C8 
SON N/A - - 
When the DI.SON is ON and the motor 
servo circuit can operate smoothly, this 
DO is ON. 
ZSPD ALL 5 4 
When the motor speed is slower than 
the setting value of parameter P1-38, 
this DO is ON. 
TSPD ALL - - 
When the motor actual speed (r/min) is 
faster than the setting value of 
parameter P1-39, this DO is ON.  
TPOS 
PT, PT-S, 
PT-T 
1 26 
When the deviation between the motor 
command and actual position (PULSE) 
is smaller than the setting value of 
parameter P1-54, this DO is ON. 
TQL 
ALL 
(except for 
T and Tz) 
-  -  When torque is limiting, this DO is ON. 
ALRM ALL 28 27 
When the alarm occurs (except 
forward/reverse limit, emergency stop, 
communication error, under voltage), 
this DO is ON. 
BRKR  ALL  -  -  Control contact of brake. 
OLW ALL - - 
When the overload level is reached, 
this DO is ON. 
WARN ALL - - 
A warning occurs. 
When it is in the status of forward / 
reverse limit, emergency stop, 
communication error, under voltage, 
this DO is ON. 
S_CMP S, Sz - - 
When the deviation between the speed 
command and the feedback speed of 
the motor is smaller than the setting 
value of parameter P1-47, this DO is 
ON.